18133091962640 has 40 divisors (see below), whose sum is σ = 42172878809880. Its totient is φ = 7250924527616.

The previous prime is 18133091962627. The next prime is 18133091962649. The reversal of 18133091962640 is 4626919033181.

It can be written as a sum of positive squares in 4 ways, for example, as 4444068745216 + 13689023217424 = 2108096^2 + 3699868^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (18133091962649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35876495 + ... + 36378414.

It is an arithmetic number, because the mean of its divisors is an integer number (1054321970247).

Almost surely, 2^{18133091962640} is an apocalyptic number.

18133091962640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18133091962640 is an abundant number, since it is smaller than the sum of its proper divisors (24039786847240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18133091962640 is a wasteful number, since it uses less digits than its factorization.

18133091962640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72258059 (or 72258053 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 18133091962640 in words is "eighteen trillion, one hundred thirty-three billion, ninety-one million, nine hundred sixty-two thousand, six hundred forty".